Specific fluorescent sensing of aluminium using naphthalene benzimidazole derivative in aqueous media

Velmurugan, K.; Mathankumar, S.; Santoshkumar, S.; Amudha, S.; Nandhakumar, Raju

doi:10.1016/j.saa.2014.11.103

Cited by 80 publications

(22 citation statements)

References 45 publications

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“…4). Furthermore, the binding stoichiometry between 1-Fe 2+ was also confirmed by the Benesi-Hildebrand nonlinear curve fitting method [27][28][29] indicates that the chelation process between Fe 2+ with EDTA is reversible and completed within 2 minutes time (Fig. 6).…”

Section: Stoichiometry and Binding Mode Studiesmentioning

confidence: 69%

Naphthalene based fluorescent chemosensor for Fe 2+ -ion detection in microbes and real water samples

Bhuvanesh

Velmurugan

Suresh

et al. 2017

Journal of Luminescence

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Section: Stoichiometry and Binding Mode Studiesmentioning

confidence: 69%

Naphthalene based fluorescent chemosensor for Fe 2+ -ion detection in microbes and real water samples

Bhuvanesh

Velmurugan

Suresh

et al. 2017

Journal of Luminescence

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“…By analyzing the structure of 1 and above experiment results, we can conclude that 1 bound with Cu 2+ mainly through Cu 2+ ···O and Cu 2+ ···N interactions. Once complex 1 ·Cu 2+ was formed, the photo-induced electron transfer (PET) process from the imidazole rings to naphthalene ring was switched on and it led to the quench of fluorescence emission of 1 69 , 70 . We tried to cultivate the single crystal of 1 ·Cu 2+ , but unsuccessful.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Macrometallocycle and Selective Sensor for Copper Ion

Liu

Zhao

Liu

2018

Sci Rep

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Two bis-imidazolium salts 1,8-bis[2’-(N-R-imidazoliumyl)acetylamino]naphthalene chloride (L1H4·Cl2: R = Et; L2H4·Cl2: R = nBu), as well as their four NHC metal complexes [L1H2Ag]Cl (1), [L1Ni] (2), [L2Ni] (3) and [L1H2Hg(HgCl4)] (4) have been synthesized. In each of the cationic moieties of complexes 1 or 4, there is a groove-like 14-membered macrometallocycle, and each macrometallocycle is consisted of one biscarbene ligand L1H2 and one metal ion (silver(I) ion for 1 and mercury(II) ion for 4). Three 6-membered cycles are contained in each molecule of complexes 2 or 3. Additionally, the selective recognition of macrometallocycle 1 for Cu2+ was studied with the methods of fluorescence and ultraviolet spectroscopy, 1H NMR titrations, MS and IR spectra. The experimental results display macrometallocycle 1 can discriminate Cu2+ from other cations effectively.

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“…The sp 2 hybridized nitrogen atom on benzimidazole has a lone pair of electrons that can coordinate with metal ions, resulting in changes in optical properties to achieve the purpose of detection (21). Thus, there have been a number of reports about small molecule probes containing benzimidazole (22,23). Related studies on benzimidazolecontaining conjugated polymers reported in the past have mainly focused on light-emitting diodes (24) and photovoltaic devices (25).…”

Section: Introductionmentioning

confidence: 99%

Novel benzimidazole-based conjugated polyelectrolytes: synthesis, solution photophysics and fluorescent sensing of metal ions

Wei

et al. 2020

E-Polymers

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AbstractTwo benzimidazole-based conjugated polyelectrolytes (+)-PPBIPV and (-)-PPBIPV which have opposite charges on their side chains were synthesized via Heck coupling reaction and characterized by 1H-NMR, UV-vis and PL spectroscopy. These two polyelectrolytes are both consisted of benzimidazole derivatives and phenylenevinylene units. The absorption and emission spectra reveal that the polymers both have solvent-dependency and concentration-dependency, and they exhibit aggregation effect in aqueous solution. In the respect of ion detection, the aqueous solution of (+)-PPBIPV has excellent selectivity and sensitivity for Fe3+. Moreover, Pd2+ can almost completely quench the fluorescence of (+)-PPBIPV in methanol solution, and its quenching constant KSV is 5.93×104 M-1. For (-)-PPBIPV, Sn2+ can double the fluorescence intensity of its aqueous solution, while (-)-PPBIPV has good identification for Fe3+ in methanol with a KSV = 3.44×105 M-1. Hence, two polyelectrolytes have considerable potential to become effective fluorescent sensing materials for some specific metal ions. All of the stoichiometric relationships between metal ions and conjugated polyelectrolytes were calculated using Benesi-Hildebrand equation.

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Specific fluorescent sensing of aluminium using naphthalene benzimidazole derivative in aqueous media

Cited by 80 publications

References 45 publications

Naphthalene based fluorescent chemosensor for Fe 2+ -ion detection in microbes and real water samples

Naphthalene based fluorescent chemosensor for Fe 2+ -ion detection in microbes and real water samples

Preparation of Macrometallocycle and Selective Sensor for Copper Ion

Novel benzimidazole-based conjugated polyelectrolytes: synthesis, solution photophysics and fluorescent sensing of metal ions

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